Short answer: the Harman Kardon Luna 2. It ranks #25 of 177 medium speakers by sound quality, rated 4.1/5, at $199.95. The Ultimate Ears Wonderboom 2 ranks #110, rated 2.9/5, at $80, $119.95 cheaper, not enough of a saving to outweigh the sound-quality gap.
The Harman Kardon Luna 2 is the better-sounding option. A stylish waterproof speaker with clear, spacious mids, tight bass that stays clean at volume, and stereo pairing with a second unit. It has an adjustable EQ, which the Ultimate Ears Wonderboom 2 lacks. It charges over USB-C rather than Micro USB. The tradeoff: Treble can sound bright and edgy, and it loses more output off-axis than some rivals.
The Ultimate Ears Wonderboom 2 is the lighter pick. A small waterproof speaker that floats and is light enough to toss in a bag for the pool or beach. At 0.9 lbs (420 g) it weighs much less than the Harman Kardon Luna 2 at 1.6 lbs (735 g). The tradeoff: Not stereo, barely any bass, recessed treble.
Buy the Harman Kardon Luna 2. It is rated higher for sound quality, and saving $119.95 with the Ultimate Ears Wonderboom 2 does not make up for the sound-quality gap.
Want more options? Browse the full Portable Bluetooth rankings.
A stylish waterproof speaker with clear, spacious mids, tight bass that stays clean at volume, and stereo pairing with a second unit.
A small waterproof speaker that floats and is light enough to toss in a bag for the pool or beach.
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Specifications Side By Side
| Harman Kardon Luna 2 | Ultimate Ears Wonderboom 2 | |
|---|---|---|
| Price | $199.95 | $80 |
| Ranked | #25 of 177 in Medium Size Portable Bluetooth Speakers | #110 of 177 in Medium Size Portable Bluetooth Speakers |
| App | Yes | No |
| Aux Input | No | No |
| Battery Life | 12 hours (Manufacturer specified) | 12 hours (Manufacturer specified) |
| Bluetooth | Yes | Yes |
| Bluetooth Codecs | SBC | SBC |
| EQ | Yes (4 presets + custom) | No |
| IP Rating | IP67 | IP67 |
| MicroSD Playback | No | - |
| Power Input | USB-C | Micro USB |
| Stereo | No | No |
| Omnidirectional | No | Yes |
| TWS | Yes | Yes |
| USB Playback | No | - |
| Weight | 1.6 lbs (735 g) | 0.9 lbs (420 g) |
| Bluetooth Version | 5.4 | 5.1 |
| Dimensions | 8.5” x 3.3” x 3.2” (216 x 84 x 81 mm) | 4.1” x 3.8” (104 x 95.3 mm) |
| Drivers | 62mm x 82mm woofer with passive radiator, 20mm tweeter | 2x 40mm active drivers + 2x passive radiators |
| Frequency Response | 58Hz - 20kHz (-6dB) (Manufacturer specified) | - |
| Amplifier Power | 40W (25W woofer + 15W tweeter) | - |
| Digital Aux Input | No | No |
| Strap | No | Yes (built-in loop) |
| Bass Extension (-10dB) | - | 82Hz |
| Maximum SPL | - | 88dB (measured by Alan Ross Reviews) |
| Party Mode | - | No |
| Built-in Microphone | - | No |
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